Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Spatially structured populations with a low level of cryptic diversity in European marine Gastrotricha |
| Abstract | Species of the marine meiofauna such as Gastrotricha are known to lack dispersal stages and are thus assumed to have low dispersal ability and low levels of gene flow between populations. Yet, most species are widely distributed, and this creates a paradox. To shed light on this apparent paradox, we test (i) whether such wide distribution may be due to misidentification and lumping of cryptic species with restricted distributions and (ii) whether spatial structures exist for the phylogeography of gastrotrichs. As a model, we used the genus Turbanella in NW Europe. DNA taxonomy using a mitochondrial and a nuclear marker supports distinctness of four traditional species (Turbanella ambronensis, T. bocqueti, T. mustela and T. cornuta) and provides evidence for two cryptic species within T. hyalina. An effect of geography on the within-species genetic structure is indeed present, with the potential for understanding colonization processes and for performing phylogeographic inference from microscopic animals. On the other hand, the occurrence of widely distributed haplotypes indicates long-distance dispersal as well, despite the assumed low dispersal ability of gastrotrichs. |
| Source | Molecular ecology (Print) 21 (5), pp. 1239–1254 |
| Keywords | 18Scytochrome c oxidase subunit I geneGastrotrichamarine meiofaunaNE Atlanticphylogeography |
| Journal | Molecular ecology (Print) |
| Editor | Blackwell Scientific Publications,, Oxford, Regno Unito |
| Year | 2012 |
| Type | Articolo in rivista |
| DOI | 10.1111/j.1365-294X.2011.05421.x |
| Authors | Alexander Kieneke; Pedro Arbizudro Martinez; Diego Fontaneto |
| Text | 281576 2012 10.1111/j.1365 294X.2011.05421.x ISI Web of Science WOS 000300699500017 18S cytochrome c oxidase subunit I gene Gastrotricha marine meiofauna NE Atlantic phylogeography Spatially structured populations with a low level of cryptic diversity in European marine Gastrotricha Alexander Kieneke; Pedro Arbizudro Martinez; Diego Fontaneto German Ctr Marine Biodivers Res DZMB; Imperial College London Species of the marine meiofauna such as Gastrotricha are known to lack dispersal stages and are thus assumed to have low dispersal ability and low levels of gene flow between populations. Yet, most species are widely distributed, and this creates a paradox. To shed light on this apparent paradox, we test i whether such wide distribution may be due to misidentification and lumping of cryptic species with restricted distributions and ii whether spatial structures exist for the phylogeography of gastrotrichs. As a model, we used the genus Turbanella in NW Europe. DNA taxonomy using a mitochondrial and a nuclear marker supports distinctness of four traditional species Turbanella ambronensis, T. bocqueti, T. mustela and T. cornuta and provides evidence for two cryptic species within T. hyalina. An effect of geography on the within species genetic structure is indeed present, with the potential for understanding colonization processes and for performing phylogeographic inference from microscopic animals. On the other hand, the occurrence of widely distributed haplotypes indicates long distance dispersal as well, despite the assumed low dispersal ability of gastrotrichs. 21 Published version Articolo 2012_Molecular_Ecology_21_1239_1254.pdf Articolo in rivista Blackwell Scientific Publications, 0962 1083 Molecular ecology Print Molecular ecology Print Mol. ecol. Print Molecular ecology. Print diego.fontaneto FONTANETO DIEGO TA.P04.016.004 Ecologia teorica e applicata degli ecosistemi acquatici |